msm8660-common: workaround for snapshot crash with touch2focus and flash

Auto Exposure Lock is used during touch to focus
with flash enabled. This prevents the sensor for taking
a picture since the Lock is acquired but is not released.
Fixup the CameraParameters and prevent the Auto Exposure
Lock from being used."

Adapted from: s://github.com/CyanogenMod/android_device_samsung_smdk4412-common/commit/ca3e84972778d925733b9d5a6341a00de4e87c13